uddate storage fees

docs/build/basics/fees.md

@@ -73,6 +73,8 @@ Cost estimation is a two-step process. First, you need to gather the execution e
 
 ## Storage
 
+Flow's approach to storage capacity is a bit similar to some banks' pricing models, where maintaining a minimum balance prevents monthly account fees. Here, the amount of data in your account determines your minimum balance. If you fall below the minimum balance, you cannot transact with your account, except for deposits or deleting data. The essence of storage fee model is that it ensures data availability without continuously charging fees for storage, while also preventing abuses that could burden the network's storage resources. This distinction between current state and blockchain history is crucial for understanding storage requirements and limitations.
+
 Each Flow account has associated storage used. The account's storage used is the byte size of all the data stored in the account's storage. Accounts also have a storage capacity, which is directly tied to the amount of Flow tokens an account has. The account can, without any additional cost, use any amount of storage up to its storage capacity. 
 
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